<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>34_HTML全局属性.html</title>
</head>
 <style>
     .student{
         color:red
     }
 </style>
<body>
  <div id="hello">你好！</div>
  <div id="hello2">你好！</div>

  <div  class="student">张三</div>
  <div  class="student">李四</div>
  <div  style="color: green;">旺财</div>
  <bdo dir="rtl">你是年少的欢喜</bdo>
  <div  dir="rtl">你是年少的欢喜</div>
  <div title="英雄联盟">LOL</div>
  <a href="https://www.baidu.com"  title="点击跳转百度">去百度</a>
  <div lang="en">你好</div>
</body>
</html>